6420016858 has 16 divisors (see below), whose sum is σ = 10103639040. Its totient is φ = 3055532400.

The previous prime is 6420016847. The next prime is 6420016861. The reversal of 6420016858 is 8586100246.

It is a self number, because there is not a number n which added to its sum of digits gives 6420016858.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844978 + ... + 852541.

It is an arithmetic number, because the mean of its divisors is an integer number (631477440).

Almost surely, 2^6420016858 is an apocalyptic number.

6420016858 is a deficient number, since it is larger than the sum of its proper divisors (3683622182).

6420016858 is a wasteful number, since it uses less digits than its factorization.

6420016858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697613.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 6420016858 is about 80125.0076942274. The cubic root of 6420016858 is about 1858.5691444801.

The spelling of 6420016858 in words is "six billion, four hundred twenty million, sixteen thousand, eight hundred fifty-eight".